172355208047 has 6 divisors (see below), whose sum is σ = 189448286664. Its totient is φ = 156686552660.

The previous prime is 172355208029. The next prime is 172355208133. The reversal of 172355208047 is 740802553271.

It is not a de Polignac number, because 172355208047 - 2¹⁰ = 172355207023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172355207989 and 172355208007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172355208007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 712211483 + ... + 712211724.

It is an arithmetic number, because the mean of its divisors is an integer number (31574714444).

Almost surely, 2^172355208047 is an apocalyptic number.

172355208047 is a deficient number, since it is larger than the sum of its proper divisors (17093078617).

172355208047 is a wasteful number, since it uses less digits than its factorization.

172355208047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424423229 (or 1424423218 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 172355208047 in words is "one hundred seventy-two billion, three hundred fifty-five million, two hundred eight thousand, forty-seven".